Home / 1,222,040.20-1,686,416.40-678,176.37

Finding the Fourth Proportional to 1,222,040.20, 1,686,416.40 and 678,176.37

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Solution

The fourth proportional to 1,222,040.20, 1,686,416.40 and 678,176.37 is: 935,883.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,040.20 : 1,686,416.40 = 678,176.37 : x
  2. Step 2: Convert to fraction form
    1,222,040.20/1,686,416.40 = 678,176.37/x
  3. Step 3: Cross multiply
    1,222,040.20x = 1,686,416.40 × 678,176.37
  4. Step 4: Simplify right side
    1,222,040.20x = 1,143,687,752,460.47
  5. Step 5: Solve for x
    x = 1,143,687,752,460.47/1,222,040.20
  6. Step 6: Final answer
    x = 935,883.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.